28989513

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{6481}}^1$

素因数の和:6565

約数の個数: 24

約数和(自身を含む): 48537216

約数和(自身を除く): 19547703

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 6481, 19443, 45367, 58329, 136101, 408303, 460151, 1380453, 3221057, 4141359, 9663171, 28989513]

約数ペア:

[(1, 28989513), (3, 9663171), (7, 4141359), (9, 3221057), (21, 1380453), (63, 460151), (71, 408303), (213, 136101), (497, 58329), (639, 45367), (1491, 19443), (4473, 6481)]